TM 5-5420-226-20-1 Symptom-5 DETAILED TROUBLESHOOTING PROCEDURE VEHICLE OPERATION -  POWERPLANT, STARTING (Continued) FROM STEP 1 0 2 /  Check    front    accessory harness (CKT   76)  at  bulkhead disconnect for   electrical power to   left   fuel   tank    fuel pump. First Technician (Commander’s Station) l   Displace    front   accessory harness connector (CKT 76) from rear    accessory harness at   bulkhead disconnect (page 10-269). l   Set  multimeter to  measure 18 to  30  volts   dc,  or  use  STE/ ICE    Test No. 89   (page   4-81). l   Connect    red   probe    of  meter   to  contact K   (CKT 76)   of front accessory harness connector at   bulkhead disconnect and    black probe to   ground. Second Technician (Operator’s Station) l   Set    MASTER BATTERY switch ON, First Technician (Commander’s Station) l   Check    if  meter   indicates 18  to   30   volts    dc, Does    meter indicate 18  to   30   volts    dc? Qii&: z  .* )y - I. o -n + o 11 TO   VEHICLE GROUND CONTACT K ( FOR   CLARITY QUADRANT . ASSEMBLIES NOT   SHOWN ) l   Inspect front    accessory harness for   bent/broken connector contacts or   loose CKT   76   wire   at   rear   of connectors. l   Repair   connectors if  defective (page 10-298). l   If  connectors are   not defective, notify support maintenance of   a  defective front    accessory harness. l    Install    front    accessory harness connector to bulkhead disconnect (page 10-270). TA106865 — 4-176